| Acronym | Meaning |
| TNN-TB | Third Neighbor Nonorthogonal (basis) Tight Binding |
| HAO | Hybrid Atomic Orbital |
| ACGIH | American Conference Of Governmental Industrial Hygienists |
| CPB | Cardiopulmonary Bypass |
| CACGP | Committee On Atmospheric Chemistry And Global Pollution |
| OSEE | Optically Stimulated Electron Emission |
| LEV | Low Emission Vehicle |
| TAC | Toxic Air Contaminant |
| RED | Radiation Enhanced Diffusion |
| CHORUS | CERN Hybrid Oscillation Research Apparatus |